He was a top student of the famed Mashpia, Reb Zalman Moishe HaYitzchaki. Futerfas operated clandestine Jewish cheders in the Union of the Soviet Socialist Republics, for which he was incarcerated for 14 years in Siberian gulags. He arrived there in the summer of 1973 where his farbrengens were famous.
He died on July 2, 1995, and is buried in London.
He was known for telling stories, particularly from his incarceration, and deriving lessons from everything he heard and saw there. He once told that although playing cards was against prison rules, his prison-mates would always play in their cell.
The prison guard could see them playing, however when he came in, the cards would be gone and as hard as he would search, the guard could not find the illicit items. When he finally gave up and promised not to bother the prisoners if they would only tell him what they did with the cards, they told him that every time he came in, they would slip the cards into his own pocket and then pick-pocket the cards back before he left.
Futerfas learned from this that sometimes we go looking far and long, when we have what we want in our own pocket.
Other well known stories abound on the internet:
Rabbi Dovid Dick (Mashpia in Yeshiva Tiferes Bachurim, Morristown, New Jersey)
Doctor Herman Branover
Rabbi Levi Yitzchok Ginsberg.